Index: branches/release-34/lib/MT/ObjectDriver/Driver/DBI.pm
===================================================================
--- branches/release-34/lib/MT/ObjectDriver/Driver/DBI.pm (revision 1502)
+++ branches/release-34/lib/MT/ObjectDriver/Driver/DBI.pm (revision 1873)
@@ -59,4 +59,21 @@
                      order  => '',
                      limit  => undef,
+                     offset => undef,
+                    },
+    );
+}
+
+sub exist {
+    my $driver = shift;
+    my($class, $terms, $args) = @_;
+
+    return $driver->_select_aggregate(
+        select   => '1',
+        class    => $class,
+        terms    => $terms,
+        args     => $args,
+        override => {
+                     order  => '',
+                     limit  => 1,
                      offset => undef,
                     },